99-00 Civic P2e Auto Ecu

Hello To Everyone, We Just Did Engine Swap On My 00 Honda Civic Dx Auto Tranny, With B16a Sirii Jdm And We Put The Integra Auto Tranny,and We Use The Dx Ecu ,wiring Harness The Car Is Running But The Problem Was The D4 Is Flashing After 2-3 Minutes .i Have A P30 Jdm Auto Ecu And The Jumper Harness Obd2b To Obd1 Auto To Auto Made By Boomslang ,i Try To Put It The Car Start ,reverse But Not Shifting And No D4 Light .thanks Hoping Someone Can Help Thanks .i Know This Is A One Of Kind Swap .